3. Stocks to watch -- Lockheed Martin, Lufthansa: Shares in the aerospace and defense firm Lockheed Martin(LMT) could be on the move Monday after Israel's Security Cabinet announced on Sunday that it would buy 17 additional Lockheed Martin F-35 fighter jets. This would bring the country's total purchase to 50 F-35s.

The additional jets will cost the Israeli government an estimated $1.5 billion.

Meanwhile, shares in German airline Lufthansa(DLAKY) are dropping by 3% in Europe after the pilots' union said they would continue striking on Tuesday and Wednesday.

Talks aimed at resolving a costly strike failed on Sunday.

Strikes last week forced the cancellation of 2,755 flights, affecting more than 345,000 passengers.